If you've enjoyed a really good book, what do you do when you finish it? Go on to read more books by the same author, or read more in the same genre, or do you go for something that is completely different in mood and style?
I have done all three of these (though obviously not at the same time!) and it very much depends on my mood at the end of the story. If I've loved a gory crime thriller, I may well want something humorous to show the lighter side of life, albeit a fictional one!
With short stories especially, I tend to read a few by the same author before moving on. With novels, if the book has really gripped me, I've got to check out what else the author has done, even if I decide I'll come back to those later.
The important thing though is that whatever you read, you enjoy it so much, you keep on reading, no matter what author, genre, style etc you choose next. Happy reading!